Home – Home – Jornals – Contemporary Problems of Ecology 2012 number 3

Results of the investigation of qualitative composition and relative concentrations of readily volatile compounds of needles in two natural pine populations situated in the forest-steppe zone in the south of Middle Siberia are presented. The number of components distinguished is 89. Anаlysis of intra- and interpopulation variability of 31 terpenoids (of mono- and sesquiterpene fractions) was carried out. The spatial structure of the dispersion of signs was anаlyzed. Reliable interpopulation differences in the concentrations of the majority of compounds were marked. It was established that worsening of growth conditions inside populations causes an increase in the mass concentration of light-weight monoterpene compounds, especially α-pinene, a decrease in the qualitative diversity of the components of volatile oils. Groups of terpenoids with relative content connected to different extents with interpopulation differences and diversity of conditions for tree growth inside populations were distinguished.